The ALICE Transition Radiation Detector : Construction, operation, and performance

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Acharya , S , Brucken , E J , Chang , B , Kim , D J , Litichevskyi , V , Mieskolainen , M M , Orava , R , Rak , J , Räsänen , S S , Snellman , T W , Trzaska , W H , Viinikainen , J & The ALICE Collaboration 2018 , ' The ALICE Transition Radiation Detector : Construction, operation, and performance ' , Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment , vol. 881 , pp. 88-127 . https://doi.org/10.1016/j.nima.2017.09.028

Title: The ALICE Transition Radiation Detector : Construction, operation, and performance
Author: Acharya, S.; Brucken, E. J.; Chang, B.; Kim, D. J.; Litichevskyi, V.; Mieskolainen, M. M.; Orava, R.; Rak, J.; Räsänen, S. S.; Snellman, T. W.; Trzaska, W. H.; Viinikainen, J.; The ALICE collaboration
Contributor: University of Helsinki, Helsinki Institute of Physics
University of Helsinki, University of Jyväskylä
University of Helsinki, University of Jyväskylä
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, University of Jyväskylä
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, University of Jyväskylä
University of Helsinki, University of Jyväskylä
University of Helsinki, University of Jyväskylä
Date: 2018-02-11
Number of pages: 40
Belongs to series: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
ISSN: 0168-9002
URI: http://hdl.handle.net/10138/231337
Abstract: The Transition Radiation Detector (TRD) was designed and built to enhance the capabilities of the ALICE detector at the Large Hadron Collider (LHC). While aimed at providing electron identification and triggering, the TRD also contributes significantly to the track reconstruction and calibration in the central barrel of ALICE. In this paper the design, construction, operation, and performance of this detector are discussed. A pion rejection factor of up to 410 is achieved at a momentum of 1 GeV/c in p-Pb collisions and the resolution at high transverse momentum improves by about 40% when including the TRD information in track reconstruction. The triggering capability is demonstrated both for jet, light nuclei, and electron selection. (c) 2017 CERN for the benefit of the Authors. Published by Elsevier B.V.
Subject: Transition radiation detector
Multi-wire proportional drift chamber
Fibre/foam sandwich radiator
Xenon-based gas mixture
Tracking
Ionisation energy loss
dE/dx
TR
Electron-pion identification
Neural network
Trigger
COLLIDING BEAM EXPERIMENT
ELECTRON IDENTIFICATION
DRIFT CHAMBERS
TRD PROTOTYPES
ENERGY-LOSS
GEV/C
COLLISIONS
PIONS
114 Physical sciences
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